• Title/Summary/Keyword: Single-chip

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The development of Inspection Machine for a blood virus infection (바이러스 감염 판별용 혈액 검사기 개발)

  • Jun, Jae-Min;Seo, Kyu-Tae;Lee, Bo-Hee;Lee, In-Koo;Min, Seung-Ki;Kim, Hak-Jun
    • Proceedings of the KIEE Conference
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    • 2004.11c
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    • pp.465-467
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    • 2004
  • This paper deals with the design and analysis of automatic virus infection machine, which can be used in blood testing at veterinary hospital. It consists of the mechanical positioning parts and electrical control parts. Two of driving motor and ball screws are used to move the liquid container into the test position and mix the blood on litmus paper. In addition, a thermal controller is installed to keep the container temperature on constant level. The user interface using with a LCD and some keys are supplied with a 8-bit single chip controller. All of the designs issue related with the mechanism and controllers are discussed in detail. Finally the proposed machine is tested in real experiment with the formal processing to judge the virus infection, and also the usefulness of designed algorithm is verified through the experiments.

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Design And Implementation of X-Band Frequency Synthesizer for Radar Transceiver (Radar Transceiver용 X-밴드 PLL 주파수 합성기 설계 및 제작)

  • Lee, Hyun-Soo;Park, Dong-Kook
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • 2005.11a
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    • pp.137-140
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    • 2005
  • A frequency synthesizer of 10 GHz $\sim$ 11 GHz for FMCW radar is designed and implemented by the form of indirect frequency synthesizer of a single loop structure. The synthesizer uses a high speed digital PLL chip. It is difficult to divide directly by using a program counter of PLL chip because the output frequency of VCO is 10 GHz $\sim$ 11 GHz, so we lower the frequency to 625 MHz $\sim$ 687.5 MHz by using a prescaler, and then divide the frequency by the program counter. The output frequency sweep of VCO from 10 GHz to 11 GHz is measured.

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Micro Ultrasonic Elliptical Vibration Cutting (II) Ultrasonic Micro V-grooving Using Elliptical Vibration Cutting (미세 초음파 타원궤적 진동절삭 (II) 타원진동 절삭운동을 이용한 미세 홈 초음파 가공)

  • Kim Gi Dae;Loh Byoung-Gook;Hwang Kyung-Sig
    • Journal of the Korean Society for Precision Engineering
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    • v.22 no.12 s.177
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    • pp.198-204
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    • 2005
  • For precise micro V-grooving, ultrasonic elliptical vibration cutting (UEVC) is proposed using two parallel piezoelectric actuators, which are energized by sinusoidal voltages with a phase difference of 90 degrees. Experimental setup is composed of stacked PZT actuators, a single crystal diamond cutting tool, and a precision motorized xyz stage. It is found that the chip formed in the process of UEVC is discontinuous because of the periodic contacts and non-contacts occurring between the tool and workpiece. It is experimentally observed that the cutting force in the process of UEVC significantly reduces compared to the ordinary non-vibration cutting. In addition, the creation of burr during UEVC is significantly suppressed, which is attributable to the decrease in the specific cutting energy.

Micro V-groove Machining Using Cyclic Elliptical Cutting Motion of a Couple of Piezoelectric Material (압전소자의 미세회전운동을 이용한 초음파 미세 홈 가공)

  • Kim G.D.;Hwang K.S.;Loh B.G.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.625-628
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    • 2005
  • For precise micro-grooving and surface machining, ultrasonic cyclic elliptical cutting is proposed using two parallel piezoelectric actuators. The piezoelectric actuators are energized by sinusoidal voltages of varying phase which is essenstial to generating elliptical cutting. Experimental setup is composed of ultrasonic motor, single crystal diamond cutting tool, and precise motorized xyz stage. It is confirmed experimentally that the cutting performance, in terms of the cutting force, the burr formation, and the discontinuous chip formation is improved remarkably by applying ultrasonic elliptical vibration cutting.

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Multithread video coding processor for the videophone (동영상 전화기용 다중 스레드 비디오 코딩 프로세서)

  • 김정민;홍석균;이일완;채수익
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.33A no.5
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    • pp.155-164
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    • 1996
  • The architecture of a programmable video codec IC is described that employs multiple vector processors in a single chip. The vector processors operate in parallel and communicate with one another through on-chip shared memories. A single scalar control processor schedules each vector processor independently to achieve real-tiem video coding with special vector instructions. With programmable interconnection buses, the proposed architecture performs multi-processing of tasks and data in video coding. Therefore, it can provide good parallelism as well as good programmability. especially, it can operate multithread video coding, which processes several independent image sequences simultaneously. We explain its scheduling, multithred video coding, and vector processor architectures. We implemented a prototype video codec with a 0.8um CMOS cell-based technology for the multi-standard videophone. This codec can execute video encoding and decoding simultaneously for the QCIF image at a frame rate of 30Hz.

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Development of X-band frequency synthesizer for radar transceiver (레이더 송수신기용 X 밴드 주파수 합성기 개발)

  • Lee, Hyun-Soo;Park, Dong-Kook;Lee, Su-Tea;Kim, Jin-Young
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2005.11a
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    • pp.208-209
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    • 2005
  • A frequency synthesizer of 10 GHz ${\sim}$ 11 GHz for FMCW radar is designed and implemented by the form of indirect frequency synthesizer of a single loop structure. The synthesizer uses a high speed digital PLL chip. It is difficult to divide directly by using a program counter of PLL chip because the output frequency of VCO is 10 GHz ${\sim}$ 11 GHz, so we lower the frequency to 625 MHz ${\sim}$ 687.5 MHz by using a prescaler, and then divide the frequency by the program counter. The output frequency sweep of VCO from 10 GHz to 11 GHz is measured.

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Specialized VLSI System Design for the Generalized Hough Transform (일반화된 Hough 변환을 위한 특수 목적 VLSI 시스템 설계에 관한 연구)

  • 채옥삼;이정헌
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.32B no.3
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    • pp.66-76
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    • 1995
  • In this research, a mesh connected VLSI structure is proposed for the real time computation of the generalized Hough transform(GHT). The purpose of the research is to design a generalized Hough transformer that can be realized as a single chip processor. The GHT has been modified to yield a highly parallel structure consisting of simple processing elements(PEs) and communication networks. In the proposed structure, the GHT can be computed by first assigning an image pixel to a PE and performing shift and add operations. The result of the CAD circuit simulation shows that it can be computed in the time proportional to the number of pixels in the pattern. In addition to the Hough transformer, the peak detector has been designed to reduce 1)the number of the I/O operations between the transformer and the host computer and 2) the host computer's burden for peak detection by transmitting only the local peaks detected from the transformed accumulator. It is expected that the proposed single chip Hough transformer with peak detector makes a fast and inexpensive edge based object recognition systems possible for many industrial and military applications.

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Development of a Test-Bed Autonomous Underwater Vehicle for Tank Test-Hardware and Software (자율 무인 잠수정(AUV)의 모의 실험을 위한 테스트베드의 개발-하드웨어와 소프트웨어)

  • 이판묵;전봉환;정성욱
    • Journal of Ocean Engineering and Technology
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    • v.11 no.1
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    • pp.106-112
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    • 1997
  • This paper describes the development of a test-bed vehicle named TAUV which can be a tool to evaluate the performance of a new control algorithm, operating software and the characteristics of sensors for an AUV. The test-bed AUV is designed to operate at depth of ten meters. It is 19.5kg in air and neural buoyancy in water and the dimension is $535{\times}400{\times}102mm$. TAUV is equipped with a magnetic compass, a biazial inclinometer, a rate gyro, a pressure sensor and an altitude sonae for measuring the motion of the vehicle. Two horizoltal thursters and two elevators are installed in order to propel and control the AUV. This paper persents the control system of TAUV which is based on a 16 bit single-chip microprocessor, 80c196kc, and the software architecture for the operating system. Experimental results are included to verify the performance of the TAUV.

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Development of Network remote Control System using Ethernet (Ethernet을 이용한 네트워크 원격 컨트롤 시스템 개발)

  • Kim, Yi-Cheal;Lee, Jea-Ho;Lee, Jong-Sung;Park, Ki-Heon
    • Proceedings of the KIEE Conference
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    • 2003.07d
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    • pp.2140-2142
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    • 2003
  • Recently, TCP/IP on Ethernet protocol is in use environment of LAN have developed a single chip by hardware. Therefore, the study about the single chip applies to the system control application like information electronic appliances, manufacturing automation machine has been made progress. This paper is the development of experimental Client node and Serve node that can transfer input-output data needed on Network Control System Client node is a sensor part of control system, that is, an analog signal is applicable to output data convert AD through LAN. Server node data sended in client convert DA, and then it is applicable to driver of Control System, so it achieves its part. In this study, is prove that using TCP/IP construct Network Control System.

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A Study on the Inverter Arc Welder with High Power Factor Using Single-Chip Microprocessor (싱글칩 마이크로프로세서를 이용한 고역율 인버터 아크 용접기에 관한 연구)

  • 채영민;이승요;신우석;목형수;최규하
    • The Transactions of the Korean Institute of Power Electronics
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    • v.2 no.4
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    • pp.56-64
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    • 1997
  • 최근 용접분야에서는 용접성능을 향상시키기 위하여 인버터회로를 용접기에 적용한 인버터 용접기에 관한 연구가 활발히 진행되고 있다,. 그러나 범용의 인버터 용접기의 경우 다이오드 정류기를 사용함에 저차의 전류고조파가 발생하고 시스템 역율을 저하시킨다. 따라서 본 논문에서는 인버터 아크 용접기의 역율개선을 위한 PWM 컨버터에 관하여 연구하여 입력전류의 저차 고조파를 저감하였고 전원전압과 동상으로 전원전류를 제어함에 의한 단위 역율형 인버터 용접기의 특성을 해석하였다. 또한 본 논문에서는 에너지 절약, 용접 특성, 역율, 사용율, 크기 및 부피 등의 관점에서 인버터 아크용접기의 응용연구 및 실험적 분석을 수행하였고 용접기 시스템에서 발생하는 전기적 노이즈를 억제하고 전력용 반도체 소자를 보호할 목적으로 새로운 노이즈 차폐변압기를 채택하였다. 이상의 전체시스템은 싱글칩 마이크로 프로세서를 이용한 디지털 제어기로 구현함으로서 제어기의 유연성과 기능의 다양화를 추구하였다.

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